Domestic air travelers can check one thing off their immediate to-do list. As of this week, all 50 states either met the looming Jan. 22 deadline to comply with the Real ID Act or have an extension to do so.

This means until 2020, all passengers can continue using their driver’s licenses at security checks for domestic flights.

The Real ID Act, passed by Congress in 2005, enacted the 9/11 Commission’s recommendation the federal government set certain standards for identification. Also known as an “enhanced ID,” the new form of identification provides proof of identity and U.S. citizenship, and includes technology to make travel between the United States, Canada, Mexico and the Caribbean easier.

All states are currently implementing Real ID programs: 28 states and territories are already fully compliant, and 26 were granted an extension through Oct. 1, 2020.

At that time, all adults boarding any federally regulated aircraft, including domestic flights, who don’t have a Real ID will need to show an alternative form of identification, such as a passport or Global Entry Card, at security.